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https://www.readbyqxmd.com/read/29786635/mechanical-behavior-optimization-of-chitosan-extracted-from-shrimp-shells-as-a-sustainable-material-for-shopping-bags
#1
Giacomo D'Angelo, Amal Elhussieny, Marwa Faisal, I S Fahim, Nicola M Everitt
The use of biodegradable materials for shopping bag production, and other products made from plastics, has recently been an object of intense research-with the aim of reducing the environmental burdens given by conventional materials. Chitosan is a potential material because of its biocompatibility, degradability, and non-toxicity. It is a semi-natural biopolymeric material produced by the deacetylation of chitin, which is the second most abundant natural biopolymer (after cellulose). Chitin is found in the exoskeleton of insects, marine crustaceans, and the cell walls of certain fungi and algae...
May 22, 2018: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29786146/awareness-of-and-phobias-about-topical-corticosteroids-in-parents-of-infants-with-eczema-in-hangzhou-china
#2
Yunling Li, Ting Han, Wei Li, Yin Li, Xiaoxuan Guo, Lei Zheng
BACKGROUND/OBJECTIVES: Knowledge of and phobias about topical corticosteroids in parents of infants with eczema affect efficacy of eczema treatment. METHODS: We surveyed 300 parents of children with eczema using a questionnaire to investigate knowledge of and phobias about topical corticosteroids. RESULTS: Overall, 85.7% (n = 257) of children had used topical corticosteroids, with 12.8% (n = 33) of children having steroids applied for only 1-3 days per episode; 79...
May 22, 2018: Pediatric Dermatology
https://www.readbyqxmd.com/read/29785972/a-methodology-to-objectively-assess-the-performance-of-sound-field-amplification-systems-demonstrated-using-50-physical-simulations-of-classroom-conditions
#3
Stephen Dance, Bradford Backus, Lorenzo Morales
Introduction: The effect of a sound reinforcement system, in terms of speech intelligibility, has been systematically determined under realistic conditions. Different combinations of ambient and reverberant conditions representative of a classroom environment have been investigated. Materials and Methods: By comparing the measured speech transmission index metric with and without the system in the same space under different room acoustics conditions, it was possible to determine when the system was most effective...
May 2018: Noise & Health
https://www.readbyqxmd.com/read/29785968/force-activatable-coating-enables-high-resolution-cellular-force-imaging-directly-on-regular-cell-culture-surfaces
#4
Anwesha Sarkar, Yuanchang Zhao, Yongliang Wang, Xuefeng Wang
Integrin-transmitted cellular forces are crucial mechanical signals regulating a vast range of cell functions. Although various methods have been developed to visualize and quantify cellular forces at the cell-matrix interface, a method with high performance and low technical barrier is still in demand. Here we developed force-activatable coating (FAC) which can be simply coated on regular cell culture apparatus's surfaces by physical adsorption, and turn these surfaces to force reporting platforms that enable cellular force mapping directly by fluorescence imaging...
May 22, 2018: Physical Biology
https://www.readbyqxmd.com/read/29785807/renewal-during-functional-communication-training
#5
Valdeep Saini, William E Sullivan, Emily L Baxter, Nicole M DeRosa, Henry S Roane
Functional communication training (FCT) is one of the most commonly prescribed interventions for the treatment of severe destructive behavior exhibited by individuals with intellectual disabilities. Although highly effective, FCT has been shown to fail in some cases when treatment is introduced into the child's typical environment. Basic and translational research on renewal provides a model for studying the relapse of destructive behavior following successful response to treatment in clinic settings using FCT...
May 21, 2018: Journal of Applied Behavior Analysis
https://www.readbyqxmd.com/read/29785787/expanding-systems-thinking-incorporating-tools-from-medical-sociology-into-mft-education-and-research
#6
Joy Heafner, Laura Mauldin
The field of marriage and family therapy has historically focused on dynamics within family systems, and at times the role of social and cultural factors external to the family. To date, however, little scholarship has examined how therapists themselves are embedded within a mental healthcare system. The purpose of this article is to demonstrate how structural components of the mental healthcare system shape the practice of therapy. We draw from the field of medical sociology to illustrate how three dominant structures-managed care, diagnosis, and evidence-based models-are intertwining and mutually reinforcing systems that have significant and long-term implications for systemic therapists and researchers...
May 21, 2018: Journal of Marital and Family Therapy
https://www.readbyqxmd.com/read/29785717/the-place-of-abortion-in-the-pregnancy-decision-making-process-in-young-adult-women-in-catalonia-spain
#7
Laia Ferrer Serret, Montserrat Solsona Pairó
Induced abortion is one option to control fertility in Spain. Young adult women (25-34 years old) show a different abortion pattern compared to women in other age groups, being less likely to seek abortions than younger women and having one of the lowest proportions of unintended pregnancies. We aimed to analyse the factors involved in the pregnancy decision-making process to better understand why young adult women seek abortions in Catalonia, Spain. In-depth semi-structured interviews with 25 nulliparous pregnant young adult women and one focus group discussion with healthcare providers were conducted in 2008/2010...
May 21, 2018: Sociology of Health & Illness
https://www.readbyqxmd.com/read/29784857/cytosolic-delivery-of-multi-domain-cargos-by-the-n-terminus-of-pasteurella-multocida-toxin
#8
Nathan C Clemons, Yuka Bannai, Elizabeth E Haywood, Yiting Xu, James D Buschbach, Mengfei Ho, Brenda A Wilson
The zoonotic pathogen Pasteurella multocida produces a 146-kDa modular toxin (PMT) that enters host cells and manipulates intracellular signaling through action on its Gα-protein targets. The N-terminus of PMT (PMT-N) mediates cellular uptake through receptor-mediated endocytosis, followed by delivery of the C-terminal catalytic domain from acidic endosomes into the cytosol. The putative native cargo of PMT consists of a 710-residue polypeptide of three distinct modular subdomains (C1-C2-C3), where C1 contains a membrane localization domain (MLD), C2 has as-of-yet undefined function, and C3 catalyzes deamidation of a specific active-site glutamine residue in Gα-protein targets...
May 21, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29784820/efficient-collective-swimming-by-harnessing-vortices-through-deep-reinforcement-learning
#9
Siddhartha Verma, Guido Novati, Petros Koumoutsakos
Fish in schooling formations navigate complex flow fields replete with mechanical energy in the vortex wakes of their companions. Their schooling behavior has been associated with evolutionary advantages including energy savings, yet the underlying physical mechanisms remain unknown. We show that fish can improve their sustained propulsive efficiency by placing themselves in appropriate locations in the wake of other swimmers and intercepting judiciously their shed vortices. This swimming strategy leads to collective energy savings and is revealed through a combination of high-fidelity flow simulations with a deep reinforcement learning (RL) algorithm...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29784663/involvement-of-nicotinic-receptor-subtypes-in-behavioral-effects-of-nicotinic-drugs-in-squirrel-monkeys
#10
Sarah Louise Withey, Michelle R Doyle, Jack Bergman, Rajeev I Desai
Evidence suggests that the α4β2, but not the α7, subtype of nicotinic acetylcholine receptor (nAChR) plays a key role in mediating the behavioral effects of nicotine and related drugs. However, the importance of other nAChR subtypes remains unclear. The present studies were conducted to examine the involvement of nAChR subtypes by determining the effects of selected nicotinic agonists and antagonists in squirrel monkeys: a) responding for food-reinforcement; or b) discriminating the nicotinic agonist (+)-epibatidine (0...
May 21, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29784561/parkinson-s-disease-phenotype-is-influenced-by-the-severity-of-the-mutations-in-the-gba-gene
#11
Avner Thaler, Noa Bregman, Tanya Gurevich, Tamara Shiner, Yonatan Dror, Ofir Zmira, Ziv Gan-Or, Anat Bar-Shira, Mali Gana-Weisz, Avi Orr-Urtreger, Nir Giladi, Anat Mirelman
OBJECTIVE: Mutations in the glucocerebrosidase (GBA) gene are divided into mild and severe (mGBA, sGBA) based on their contribution to the phenotype of Gaucher disease (GD) among homozygotes. We conducted a longitudinal analysis of Parkinson's disease (PD) patients carrying mutations in the GBA gene to better characterize genotype-phenotype correlations. METHODS: Patients underwent a comprehensive assessment of medical, neurological, cognitive and non-motor functions...
May 17, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29784162/disinfection-of-the-goldman-applanation-tonometer-a-systematic-review
#12
Alex Ragan, Stephanie L Cote, John T Huang
OBJECTIVES: The Goldmann applanation tonometer is the gold standard for measuring intraocular pressure and a possible vector for the transmission of infectious diseases. The purpose of this study is to consolidate the evidence pertaining to the disinfection of Goldmann tonometers in an effort to facilitate an informed discussion regarding public policy in this important area. DESIGN: Systematic review. METHODS: An exhaustive literature review was undertaken to identify primary-level research that assesses the effectiveness of different agents used in the disinfection of Goldmann applanation tonometer prisms...
June 2018: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/29783684/2-45-ghz-microwave-processing-and-its-influence-on-glass-fiber-reinforced-plastics
#13
Daniel Teufl, Swen Zaremba
During the production of fiber-reinforced composite materials, liquid resin is introduced into the fiber material and cured, i.e., hardened. An elevated temperature is needed for this curing. Microwave curing of composites has been investigated for some time, but it has mostly been done using small domestic or laboratory equipment. However, no investigation has been carried out using an industrial-sized chamber-microwave for glass fiber-reinforced plastic (GFRP). Here, we show that microwave curing produces laminates of the same quality as oven-cured ones...
May 18, 2018: Materials
https://www.readbyqxmd.com/read/29783648/stability-of-go-modified-by-different-dispersants-in-cement-paste-and-its-related-mechanism
#14
Wu-Jian Long, Changle Fang, Jingjie Wei, Haodao Li
Graphene oxide (GO) is a potential material to be used as a nano-reinforcement in cement matrix. However, a prerequisite for GO to fulfill its function in the cement matrix is homogeneous dispersion. In this study, the effects of three different dispersing agents (DAs), including polycarboxylate-based high range water reducer (P-HRWR), naphthalene-based high range water reducer (N-HRWR), and air entraining agent (AEA) on the dispersion of GO in aqueous solution, simulated concrete pore solution (SCPS), and suspension of cement pastes were sequentially investigated...
May 18, 2018: Materials
https://www.readbyqxmd.com/read/29783218/the-role-of-parents-in-motivation-for-orthodontic-treatment-for-children
#15
Anna Ye Karasiunok, Liubov V Smahliuk
OBJECTIVE: Introduction: One of the main features of orthodontic treatment is the cooperation of the doctor with the patient. Active growth of a child's organism at the age from 6 to 12 has not only physiological but also psychological aspects of development. Motivation for orthodontic treatment is absent during mixed dentition. Only taking into account the somato-psychological status and the psycho-emotional condition of the patient during the orthodontic treatment allows to choose an optimal treatment option and to predict its effectiveness...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29783121/the-influence-of-nail-blocking-conditions-in-cattle-femoral-fractures
#16
Leopoldo A Paolucci, Estevam B Las Casas, Rafael R Faleiros, Cahuê F R Paz, Sergio S Rocha Junior
BACKGROUND: To investigate the effect of different fixation strategies of the intramedullary interlocking nail (IIN) on the mechanical behavior of a polymeric implant applied for femoral fracture fixation in calves, and to evaluate the performance of a glass fiber-reinforced polymer applied in a bovine femoral fracture reduction system, five Holstein male animals with a mean weight (±SD) of 62.8 ± 20.4 kg and aged 74 ± 15 were used to generate biomechanical parameters for this study...
May 7, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29783079/altered-neural-encoding-of-prediction-errors-in-assault-related-posttraumatic-stress-disorder
#17
Marisa C Ross, Jennifer K Lenow, Clinton D Kilts, Josh M Cisler
Posttraumatic stress disorder (PTSD) is widely associated with deficits in extinguishing learned fear responses, which relies on mechanisms of reinforcement learning (e.g., updating expectations based on prediction errors). However, the degree to which PTSD is associated with impairments in general reinforcement learning (i.e., outside of the context of fear stimuli) remains poorly understood. Here, we investigate brain and behavioral differences in general reinforcement learning between adult women with and without a current diagnosis of PTSD...
May 12, 2018: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29782968/trainability-of-hemodynamic-parameters-a-near-infrared-spectroscopy-based-neurofeedback-study
#18
Silvia Erika Kober, Vanessa Hinterleitner, Günther Bauernfeind, Christa Neuper, Guilherme Wood
We investigated the trainability of the hemodynamic response as assessed with near-infrared spectroscopy (NIRS) during one neurofeedback (NF) session. Forty-eight participants were randomly assigned to four different groups that tried to either increase or decrease oxygenated (oxy-Hb) or deoxygenated hemoglobin (deoxy-Hb) over the inferior frontal gyrus during imagery of swallowing movements. Deoxy-Hb could be successfully up-regulated while oxy-Hb could be successfully down-regulated during NF. Participants were not able to down-regulate deoxy-Hb or to up-regulate oxy-Hb...
May 18, 2018: Biological Psychology
https://www.readbyqxmd.com/read/29782516/how-a-smiley-protects-health-a-pilot-intervention-to-improve-hand-hygiene-in-hospitals-by-activating-injunctive-norms-through-emoticons
#19
Susanne Gaube, Dimitrios Tsivrikos, Daniel Dollinger, Eva Lermer
Hand hygiene practice in hospitals is unfortunately still widely insufficient, even though it is known that transmitting pathogens via hands is the leading cause of healthcare-associated infections. Previous research has shown that improving knowledge, providing feedback on past behaviour and targeting social norms are promising approaches to improve hand hygiene practices. The present field experiment was designed to direct people on when to perform hand hygiene and prevent forgetfulness. This intervention is the first to examine the effect of inducing injunctive social norms via an emoticon-based feedback system on hand hygiene behaviour...
2018: PloS One
https://www.readbyqxmd.com/read/29782426/nailfold-videocapillaroscopy-changes-are-associated-with-the-presence-and-severity-of-systemic-sclerosis-related-interstitial-lung-disease
#20
Joana Caetano, Filipe S Paula, Marta Amaral, Susana Oliveira, José D Alves
OBJECTIVE: The aim of this study was to evaluate the association of nailfold videocapillaroscopy (NVC) changes with the presence and severity of interstitial lung disease (ILD) in systemic sclerosis. METHODS: This was a cross-sectional analysis of 48 systemic sclerosis patients (21 patients with ILD). The NVC characteristics considered were capillary organization, capillary loss (CL), avascular areas, enlarged and giant capillaries, hemorrhages, abnormally shaped capillaries, edema, and intermittent flux...
May 19, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
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